I 29 Ia 12 over Drainage-All of Roadway
FairWoodbury County, Iowa · 0.1 Mi. S of Jct. US 77 · Structure no. 000000000053830
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected October 2023
- Type
- Culvert
- Concrete
- Length
- 52 ft
- 1 main span
- Daily traffic
- 32,900
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
I 29 Ia 12 over Drainage-All of Roadway is a concrete culvert carrying I 29 Ia 12 over Drainage-All of Roadway in Woodbury County, Iowa. It was built in 1957, so it is 68 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 32,900 vehicles a day, roughly 19% of them trucks, projected to reach 32,900 by 2043. The structure is 52 ft (15.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 29 Ia 12 over Drainage-All of Roadway built?
It was built in 1957, making it 68 years old in 2025.
What condition is I 29 Ia 12 over Drainage-All of Roadway in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.
How much traffic does I 29 Ia 12 over Drainage-All of Roadway carry?
About 32,900 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is I 29 Ia 12 over Drainage-All of Roadway?
The structure is 52 ft (15.9 m) long with a longest span of 52 ft (15.9 m).
Who owns I 29 Ia 12 over Drainage-All of Roadway?
It is owned by the State Highway Agency.